Rolling mill guide



Ap 2Q, w36. T. H. KEARNS Er Ax.

ROLLING MILL GUIDE Filed Sept. 25, 1934 Patented Apr. 28, 1936 UNI-TED STATES PATENT OFFICE Weikert,

Baltimore, Md., assignors to Bethle-V hem Steel Company, a corporation of Pennsylvania Application September 25, 1934, Serial No. 745,390

20 Claims.

Our invention relates to improvements in rolling mill guides and the like, and relates more especially to the construction of the throat of the guide which is exposed to severe surface wear by the material being rolled in passing through the same.

This invention is particularly applicable to guides for mills adapted to roll skelp or sheet bars, but it may be applied to other forms of guides if desired.

When a solid type guide is used in rolling skelp or sheet bars the opposite inner side surfaces of the throat of the guide which is engaged by the edges of the bar in passing through it soon becomes worn in such a manner as to cause defective seams or other imperfections on the desired square edges of the skelp or sheet bar.

Heretofore it has been the practice when using solid type guides to renew the'worn throat with hard welding rod material which requires considerable time and expense and makes an inferior job when completed.

One of the objects of our invention rel-ates to forming the opposite sides of the throat of the guide with hard metal inserts of abrasive resisting material having a wedge fit which can be easily and quickly removed through the sides or end of the guide and replaced by new hard metal inserts.

Another object of the invention relates to the manner of securing the hard metal throat inserts to the guide so that they will' be held tightly in position by their own wedging action without the necessity of bolts or other similar securing means.

A further object of the invention relates to securing the hard metal inserts to the throat of the guide in' such a way that they ywill have a tendency to be tightened in ther direction of the travel of the bar asl it passes through the guide.

Qther objects of the invention' will appear hereinafter.

In order to more fully describe'the invention,

we will now refer to the accompanying sheet of drawings on which like numbers indicate like parts. Y

Figure- 1 is an end elevation' of the inner end of an Aentering guide for a skelp or sheet bar mill illustrating the application of our invention.

Fig. 2 isa top plan view of the entering guide shown in Fig. 1, with a portion of the` guide casting broken away to show more clearly the manner of construction.

Fig. 3 is an end elevation of Vone side of a solid guide illustrating, deze@ lines ai@ nanna in which the throat of a guide is quickly worn by the passage of the bar through the same, and Fig. 4 is a detail of a modification showing the manner in which a hard metal insert may be secured to a delivery guide for a rolling mill.

Referring now to the characters of reference on the drawing, and rst to Figs. 1 and 2 illustrating an entering guide formed of two complementary cast metal sections 5 and 6 adapted to form a guide-box, which are secured in any suitable manner to the guide rest-.bar of a roll--iv ing mill (not shown).

The outer portions of the complementary cast sections 5 and 6 are formed with inclined or sloping inner side portions 'I to better receive and direct the bar 8 to the bite of the roll pass and inclined'side portions 9 at opposite sides of the throat It! of the guide-box adapted toengage the outer inclined sides II of hard metal wedge-shaped metal inserts I2 which are seated in grooves I3 and provided with parallel inner faces Ill forming wearing surfaces for engaging the edges of the bar during the rolling operation. These hard metal wedge-shaped members are inserted through openings I5 in the opposite side walls near the inner end of the guide and have their outer ends of greater width or thickness being curved as at I6 so they can be easily removed through the outside openings I5 of the guide by tapping the small end of the hard metal wedge-shaped inserts with a hammer or like tool.

In order to allow the inserted hard metal wedges to be easily removed the openings I5 have clearances as at I'I between the thickened curved head portion I6 and the outer end wall I3 of the opening I5. The wall I8 is inclined as at I9 to give further clearanceV during the withdrawal of the wedges.

Fig. 3 shows an inner end elevation of a solid complementary guide 20 made in a single casting and indicating in dotted lines as at 2l how the throat of the guide soon becomes worn thereby destroying its shape and causing defective seams or vimperfections on the desired square edges of the skelp or sheet bar.

Fig. 4- illustrates in detail a slightly'modied form` of a hard wedge-shaped metal insert 22 applied to a delivery guide 23 of a rolling mill which is adapted to be insertedfrom the inner end of the guide and to be removed by tapping its curved reduced end at the side 0f the guide.

While the guides described are designed for use with a skelp or sheet bar mill the same principle can if desired be adapted to be applied to the 2 wearing surfaces of guides for mills rolling other shaped bars.

In Figs. 1 and 2 we have shown the body of the guide as formed of two complementary castings 5 and 6 arranged in contact with each other, but they may be mounted on the rest bar of a rolling mill in spaced relation with each other or we may in some cases form the entire body of the guide of a single casting.

By employing inserts of hard abrasive resisting material of wedge shape in the throat of the guide which t tightly therein and will tighten in the direction of the travel of the bar being rolled thereby giving hard wearing surfaces at the wearing points of the throat of the guide with sharp corners for square edged bars which can be cheaply and quickly replaced, increases the life of the guide casting many times to those now in use.

Although we have shown and described our invention in considerable detail, we do not wish to be limited to the exact and specic details shown and described, but may use such substitutions, modications or equivalents thereof, as are embraced within the scope of our invention, or as pointed out in the claims.

Having thus described our invention what we claim and desire to secure by Letters Patent is:

1. A rolling mill guide-box, an opening formed in the side of the guide-box, and a guiding portion of hardened material adapted to be inserted or removed through the opening from the outside o-f the guide-box and held in position entirely by its own wedging action.

2. A rolling mill guide comprising a guide-box, openings formed in opposite sides of the guidebox, and wedge-shaped metal guiding portions adapted to be inserted or removed through the openings from the outer opposite sides of the guide-box and held in position in the guide-box entirely by their own wedging action.

3. A rolling mill guide comprising a guide-box having a throat, tapered grooves formed in the guide-box at the opposite sides of the throat, and wedge-shaped metal inserts seated in the tapered grooves and held in position entirely by their own wedging action.

4. A rolling mill guide comprising a guide-box having a throat, an opening formed in opposite sides of the guide-box near the throat, grooves in opposite sides of the throat extending to the openings, and wedge-shaped metal guiding portions adapted to be inserted through the openings in the sides of the guide-box and seated in the grooves.

5. A rolling mill guide comprising a pair of complementary castings adapted to form a guidebox having a throat, Wedge-shaped metal inserts secured at points in the throat subjected to the greatest wear, means for inserting or removing the wedge-shaped metal inserts through the sides of the guide-box, and means for holding the Wedge-shaped metal inserts in position entirely by their own wedging action.

6. A rolling mill guide comprising a pair of complementary castings adapted to form a guidebox having a throat, an opening formed in opposite sides of the guide-box near the throat, a groove having inclined surfaces on opposite sides of the throat extending to each opening, and wedge-shaped metal inserts adapted to be secured to the guide-box through the openings and seated in the grooves.

7. A rolling mill guide comprising a guide-box having a throat, an opening formed in opposite Vadapted to be held in position in the sides of the guide-box, and wedge-shaped metal inserts of hard abrasive resisting material adapted to be inserted or removed laterally through the openings from the outside of the guide-box and held in position entirely by their own wedging action.

8. A rolling mill guide-box provided with a throat, tapered grooves formed in opposite sides of the throat, wedge-shaped hard metal inserts seated in the tapered grooves having opposed parallel inner faces and. inclined outer surfaces tapered grooves entirely by their own wedging action.

9. A rolling mill guide-box provided with a throat for guiding a bar to be rolled, opposed removable Wedge-shaped guiding portions secured to opposite sides of the throat and held in position entirely by their own wedging action and means for laterally inserting or removing the wedge-shaped guiding portions through the sides of the guide-box.

10. A rolling mill guide-box having a throat for guiding a bar being rolled, and opposed removable Wedge-shaped guiding portions secured to opposite sides of the throat, said removable wedgeshaped guiding portions being inserted through the sides of the guide-box and held in position entirely by their own wedging action and adapted to be tightened in the guide-box by the travel of a bar through the guide.

11. A rolling mill guide-box having a throat, openings formed in opposite sides of the guidebox near the throat, grooves formed in opposite sides of the throat extending to the openings, opposed removable wedge-shaped guiding portions seated in the grooves formed in opposite sides of the throat and held in position by their own wedging action, and curved ends for the wedge-shaped guiding portions extending through the openings on opposite sides of the guide-box.

12. A rolling mill guide comprising a guide-box having a throat for guiding a bar being rolled. openings through opposite sides of the guide-box near the throat, inclined surfaces and grooves formed in opposite sides of the throat extending to the openings, opposed removable wedge-shaped guiding portions seated in the grooves formed on opposite sides of the throat and held in position by their own wedging action, said removable wedge-shaped guiding portions having sides engaging the inclined surfaces of the throat and parallel opposed faces for engaging the bar as it passes through the guide-box, and curved thickened ends for the Wedge-shaped guiding portions extending through the openings formed in opposite sides of the guide-box.

13. A rolling mill entering guide comprising a guide-box having a throat, removable wedgeshaped guiding portions inserted in tapered grooves at opposite sides of the throat at p-oints subjected to the greatest Wear and held in position in the tapered grooves entirely by their own wedging action.

14. A rolling mill entering guide comprising a guide-box having a throat, grooves formed in opposite sides of the throat, openings in the guide-box near the throat at the ends of the grooves, removable wedge-shaped guiding portions adapted to be inserted through the openings and seated in the grooves at opposite sides of the throat at points subjected to the greatest wear and held in position by their own wedging action and adapted to be tightened by the bar to be rolled in passing through the guide.

15. A rolling mill guide-box having a throat,

grooves formed in opposite sides of the throat, openings in the opposite sides of the guide-box at the ends of the grooves, and wedge-shaped edge guiding portions seated in the grooves having parallel opposed inner faces and inclined outer surfaces engaging the guide-box and held in position by their own wedging action.

16. A rolling mill guide-box having a throat, grooves formed in opposite sides of the throat, openings in the opposite sides of the guide-box at the outer ends of the grooves, wedge-shaped removable edge guiding portions adapted to guide a bar being rolled seated in the grooves having curved ends extending through the openings and provided with parallel opposed inner wearing faces and inclined outer surfaces engaging the guide-box, and clearances formed between the curved ends of the wedges and the outer ends of the openings.

17. A rolling mill delivery guide-box having a throat adapted to receive and guide a rolled bar, a tapered groove formed at the side of the throat, and a removable wedge-shaped guiding portion seated in the tapered groove and held in position entirely by its own wedging action and adapted to be tightened by the travel of the bar through the guide.

18. A rolling mill guide comprising a guidebox having a throat, said guide-box being provided with an opening through its side wall and a tapered groove at the inner end of said opening, and a guiding portion adapted to be inserted from the outside of the guide-box through the opening and seated in the tapered groove at a point subjected tothe greatest wear and held in position by its own wedging action.

19. A rolling mill guide comprising a guidebox having a throat, said guide-box being provided with an opening through opposite side walls, and a tapered groove at the inner end of each of said openings, and a removable guiding portion adapted to be inserted from the outside of the guide-box through each opening and seated in thetapered grooves at points subjected to the greatest wear and held in position by its own wedging action.

20. A rolling mill guide comprising a guidebox having a throat, said guide-box being provided With openings through the side walls and a tapered groove at the inner end of each of said openings, and a removable wedge-shaped guiding portion adapted to be insertedV from the outside of the guide-box through each opening and seated in the tapered grooves at points subjected to the greatest wear and held in position by its own wedging action.

TMOTHY H. KEARNS. MARTIN L. WEIKERT. 

